Average Co-Inventor Count = 2.57
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Technos Co., Ltd. (3 from 5 patents)
2. Sumitomo Electric Industries, Limited (2 from 10,264 patents)
3 patents:
1. 5568531 - Surface defect evaluating apparatus
2. 5249216 - Total reflection X-ray fluorescence apparatus
3. 5220591 - Total reflection X-ray fluorescence apparatus